Lang Son Prov., Huu Lung Distr., Huu Lien Comm., Tan Lai Vill., Lan Mai Mt., Huu Lien NR, ca. 430-450 m a.s.l., around point 21040′20.1” N, 106023′27.1” E, along top ridges, in completely logged primary closed evergreen mixed forests (conifer species was Cupressus tonkinensis). Small woody vine, ca. 3-5 m long; petals white; ovary hairy.
HAL 11937 19 Oct 2008 Coll.: Nguyen Tien Hiep, Daniel Luscombe, Phan Ke Loc, Chris Reynolds, Nguyen Thi Bich Ha & Hoang Van Quynh